US1639428A - Motion-transmitting mechanism - Google Patents

Description

Auga 16, 1927.

Filed May 9, 1924 I N VEN TOR.

A TTORNEYS Patented Aug. 16, 1927.

UNITED STATES PATENT OFFICE.

JOSEPH P. DALY, OF SYRACUSE, YORK, ASSI GNOR, BY MESNE ASSIGNMENTS, TO THE PROSPERITY COMPANY, INC., A CORPORATION OF NEW YORK.

MOTION-TRANSMITTING MECHANISM.

Application filed May 9, 1924. Serial No. 712,047.

This invention has for its object a particularly simple and eflicient motion transmitting mechanism for effecting a periodic 'or intermittent motion, which mechanism is particularly simple in construction, economical in manufacture and highly eificient anddurable in use, and which consists in of but few compactly arranged parts.

The invention consists in. the novel features and in the combinations and constructions hereinafter set forth and claimed.

In describing this invention reference is had to the accompanying drawing which is a sectional view of a motion transmitting mechanism embodying my invention.

This motion transmitting mechanism comprises generally driving and driven elements, one of which, as the driving element, is shiftable into and out of engagement with the other, operator-operated means, or what for convenience will be hereinafter called manual means, for shifting the shiftable or.

driving element into engagement with the other or driven element, a holding member, for holding'the driving element engaged with the driven element, and a tripping 'deelement.

vice associated with the driven element and! being'connected to the-shaft 3 by a universal joint 6 *of any suitable construction. -The worm 1'of the shaft 5 thereof is mounted on asuitable carrier 7, movable for shifting the worm into and out of mesh with the worm gear 2. ,This carrier is shown as provided with brackets as 8, on opposite sides of the universal joint 6, the brackets being pivoted to any fixed point on an axis assing transversely through the center of t e universal joint 6. The'shaft 3 is journaled in suitable bearings, and, as here shown, is journaled at its end adjacent the shaft 5 in able into a bearing formed in an upright 9 rising 'movable part .or rod 13 slidable in suitable guides formed in a fixed bracket 14, a handle lever 15 pivoted between its 'ends at 16 to any fixed point, on the frame of the machine equipped with this mecha nism, one end of the lever being pivoted at 17to the upper end of the rod 13, and an engaging member at the end of the rod 513 remote from the handle for engaging the carrier.7: This engaging member 18 usually comprises what for convenience is called herein, a latch, pivoted at 19 to the lower end of the rod and having a head 20 for engaging a pin 21 at the end of the carrier 7 remote from its ivoted end.- The latch has "an arm 22 to w ich is connected a spring v23, tending to move the latch 18 into-its operative position. An adjustable knock-ofl device 24, is arranged in the path of the arm 22, and engages the arm 22 when the carrier has been shifted fanenough to carry the worm 1 into mesh with the worm gear 2 and shifts the latch out'of engagement with the carrier. The movement of the handle lever 15 shifts the worm 1 into mesh with w the worm gear'2 against the action of a suitable returning spring 25.

' The means for holding the carrier 7 with theworm 1 in mesh with the worm gear 2,

comprises a holding member calledfor convenience, a latch 26 pivoted at 27 to anyfixed point and having a head arranged to ratchet into engagement with a shoulder 28 on the carrier 7', when the carrier has been shifted to carry the worm into mesh with the worm gear, the latch being mov- 29. g The means for tripping the latch after its operative position by a spring the worm gear 2 has been driven a predetermined amount, and thus permit the worm to move by gravity out of mesh with the worm gear, comprises one or more tripping devices 30, having shoulders as pins 31, extending laterally therefrom into the path of a shoulder 32 on the arm 33 of the latch 26. The mechanism here shown is to eftecta half revolution, and therefore there are two tripping devices arranged on the worm wheel 2 diametrically opposite each other. For effecting a precise adjustment, each tripping device is adjustably mounted on the worm wheel 2, and as here illustrated is formed with a len thwise slot for receiving screws 3O by which the device is secured to the gear 2.

The means for locking the worm gear 2 from turning when the worm 1 is out of mesh therewith comprises a sprlng pressed locking member 34, here'illustrated asa lever the worm gear by pivoted at 35 to a fixed point, and coacting with one or more lock devices 36 on the" worm gear 2. As the worm gear-in this embodiment of my invention is mounted to make a half revolution during each operation, there are two locking devices 36 arranged diametrically opposite each other. These devices are adjustably mounted upon screws 37 extending through slots 38 in said devices 36. The lock lever 34 and devices 36 are provided with coacting teeth and notches and as illustrated the lever 34 is formed with notches 39 and each device 36 is formed with a tooth 40 for entering the notch when the tooth becomes alined with the notch. The lever 34 is spring pressed and for convenience the sprin 29 which acts on the latch 26 is connect-ed at one end to the latch 26 and at its other end at 41 to a lever 34. The lever 34 is connected to the manual means to be shifted out of its operative position when the manual means is operated to shift the worm 1 into engagement with the worm gear 2,

[and usually the lever 34 is provided with a fork 42 embracing the rod 14 and the rod is formed with a shoulder 43 coacting with the fork.

In operation the spring 25 normally tends to press the rod13 downwardly and hold the latch 20 under the shoulder 21 ofthe carrier 7. Upon depression of the handle lever 15 the rod 13 is moved upwardly'against the tension of the spring 25 causing the shoulder 43 to operate the locking lever 34 and disengage it from one or the other locking devices 36. Such upward movement of the rod 13- also causes the latch 18 to shift the carrier 7 up against its weight and carry the worm 1 into mesh with the worm wheel 2. After the worm '1 comes in mesh with the worm wheel 2 the latch 26 latches under the shoulder 28 on the carrier 7 and holds the worm in mesh with the worm wheel, As the worm is constantly'rotating, the worm gear will be rotated until one or the other of the tripping devices 30 engages and trips the latch 26 and thus permits the carrier 7 to move downwardly by gravity and carry the worm 1 out of mesh with the 'worm wheel 2. In the drawing the parts are shown in their positions occupied just prior to tripping of the latch, that is, just prior to the completion of the half revolution, and, the handle lever 15, rod 13, and the latch 18 are shown as in their positions occupied when the operator-holds the hand lever depressed.

After the operator has depressed the handle 15 and the latch 26 has engaged the shoulder 28 on the carrier 7, thc'arm 22 of the latch 18 engages the knock-off shoulder 24 and moves the latch out of engagement with the carrier 7, as shown in the drawing. Thus if the operator keeps his hand on the handle lever 15, the latch 18 will be moved out ofengagement with the carrier 7,.and will not prevent the worm from disengaging from the worm wheel 2, when the latch 26 is tripped. Hence upon each operation of the handle 15 the worm wheel 2 will make but a half revolution and will not repeat if the operator holds the hand lever 15 depressed. After the worm wheel completes its half revolution one or other of the locking devices 36 comes into alinement with the notch 39 of the locking lever permitting the locking lever to be moved by its spring 29 into engagement with the locking device 36,

if the operator is not holding down the handle 15.

This motion transmitting mechanism is particularly advantageous in that it consists of but a few compactly arranged parts. It is particularly adaptable for opening and closing of press heads of power actuated pressing machines such as garment and laundry pressing machines.

lVhat I claim is:

1.'A motion transmitting mechanism, comprising driving and driven elements, the driving element including a worm, and the driven element including a worm gear for meshing with the worm, a carrier for the worm shiftable to carry the worm into and out of mesh with the worm gear, manual means for shifting the carrier to carry the worm into mesh with the worm gear,-a holding member for holding the carrier with the worm engaged with the worm gear, means for releasing the holding member, the manual means comprising a. connecting member and means for operating the connecting member to disengage the manual means from-the carrier after the holding means is operatively engaged with the carrier.

2. A motion transmitting mechanism, comprising driving and driven elements, the driving element including a worm, and the driven element including a worm gear for I meshing with the worm, a carrier for the worm, shiftable to carry the worm into and out of mesh with the worm gear, manual means for shifting the carrier to carry the worm into mesh with the Worm gear, a holding member for holding the carrier with the Worm engaged with the worm gear, means for releasing the holding member, the manual means comprising a reciprocably movable part, a latch carried by said part, and

j normally arranged to connect with the carrier When said part is operated, and means means for re arranged to move the latch out of connec-.

means for shifting the carrier to carry the worm into mesh with the worm gear, a holding member for holding the carrier with the worm en aged with the worm gear,

l easing the holding member, the manual means comprising a reciprocablymovable part, a latch pivoted to said part and normally arranged to connect with the carrier upon operation of said part, and

being mounted to shift into and out of engagement with the worm gear, means for I member has engagedwith the carrier.

a knock-oft shoulder coacting'with the latch and arranged to move the latch out of connection with the carrier after the holding 4. In a transmitting mechanism, the combination of driving and driven elements, the driving element comprising a worm, and the driven element a Worm gear, the worm shifting the worm into engagement with the worm gear, meansassociated with the worm gear for controlling the shifting of the worm out of engagement with the worm gear, and a locking means for locking the worm gear from movement after the worm has been shifted out of engagement with the worm gear.

5. In a transmitting mechanism, the combination of driving and driven elements,fthe driving element comprising a worm, and the driven element a worm gear, the worm being mounted to shift into and out of engagement with the worm gear, manual means for shifting the worm into engagement with the worm gear, means associated with the Worm gear for controlling the shifting of the worm out of engagement with the worm gear, and a locking meansfor locking the worm gear from movement after the worm, has been shifted out of engagement with the worm gear, the locking means being connected to the manual means to be shifted thereby out of its operative position upon the operation of the manualmeans.

6. In a motion transmitting mechanism,

the combination of driving and driven elements, the driving element comprising a worm, the driven element a worm gear for meshing with the worm, the Worm being mounted to shift into and out of engagement with the worm gear, a'carrier for said worm, manual means coacting with the carrier to shift the worm into engagement with the worm gear, a latchoperable to hold the carrier with the worm engaged with the worm gear, a device mounted on the Worm gear for engaging the latch to trip the same, after the worm gear has been driven a predeter mined distance, a spring pressed lock coactsigned my name, at Syracuse, in the county of Onondaga, and in the State of New York, this 28th day'of April, 1924.

- 4 JOSEPH P. DALY.

ing with the worm to normally hold it from"

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